Jack



May 6, 1924. 1,492,869

- J. D. TUCKER ET AL JACK Filed Dec. l5. 1921 Ffg 1 R wf IN VEN TOR'S JD. Tucker QpEZA/Luclc el BY E Q ATTRNEy Patented May 6, 1924.

UNITED STATES PATENT OFFICE.

JESSE D` TUCKER AND EMMITT M. TUCKER.` 0F SACRAMENTO. CALIFORNIA, ASSIGNORS TO TUCKER BROTHERS MANUFACTURING COMPANY. OF SACRAMENTO. CALIFOIR.`

NIA, A CORPORATION.

JACK.

Application led December 13, 1921.

To all whom t may concern.'

Be it known that we, Jesse D. TUCKER and EMMITT M. TUCKER, citizens of the United States of America, residing at Sacramento. county of Sacramento, State of California, have invented certain new and useful Improvements in Jacks; and we do declare the following to be a full. clear, and exact description of the same, reference be ing` had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

rThis invention relates to improvements in lifting jacks, the principal object of the in vention being to provide a small` portable jack particularly adapted to be used to spread the felly and spokes of wooden vehicle wheels of the common artillery type, for the purpose of enabling our improved spoke tighteners, such as are featured in our Patent No. 1,424,530 dated August 1st. 1922, being inserted between the felly and any spoke.

Another object is to provide a jack which will be suppo'rted by the wheel itself, and hence needs no exterior means of support.

A further object is to provide a jack for the purpose which is light, occupies but little space, is easily manipulated, and which is extremely simple of construction and manufacture.

These objects we accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Fig. 1 is a front view of the jack, showing the same as applied to a wheel.

Fig. 2 is an enlarged section of the head ortion of the jack, before complete assemly of the parts.

Fig. 3 is a similar view, after assemblyT of the members.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the shank or body of the jack, adapted to be inserted between any two spokes 2 of a wheel, and to be firmly grippled and held againstrotation by reason of t e o posite sides of said body being made we ge shaped or tapered as at 3, so as Serial No. 522,066.

to snugly fit the angle made by the spokes where they come together at the hub of the 1whlel, the shank thus bearing against the Threaded into the shank l is a stem 4- provided with a polygonal sided head 5 whereby to be engaged by a wrench of any character. The upper face of the head 5 is provided with a socket 8 having an overhanging flange 8a around its periphery. Beyond the head 5 is a pad 6 adapted to bear against the inner face of the felly 2, and provided with a central boss 7 fitting easily into the hollow or socket. 8 of the head. which boss is itself cupped as at 9 to receive a ball 10 which bears against the bottom of theI headesocket.

The pad is prevented from being removed when once in place by reason of the boss having a flange 11 on its lower end.y the bore of said boss being slightly smaller than the diameter of the ball. so that in assembling the parts. the fiange l1 is passed into the head, and when the boss engages the ball the pad is struck sharply or pressed, causing the boss to be spread enough to prevent the mat being withdrawn from the head b v reason of the engagement of the flanges ll and 8*. This forms a simple loose coupling between the mat and head which will be tiexible and semi-universal, as is essential to compensate. for the angular variations between thefric4 tionally contacting surfaces of the jack and wheel.

B v reason of the above construction, the shank cannot turn when the stem is turned, and the pad being mounted to have such little friction with the head. will not turn either when both ends of the jack are under compression.

It is therefore the work of but a few seconds to place and operate the jack suciently to spread the felly and adjacent spokes the necessary distance.

From the foregoing description it will be readily seen that we have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described our invention, what We claim as new and useful and desire to secure b v Letters Patent is:

1. A. jack haring a head and a mat`r the head having a socket provided with an overhanging flange around its periphery, a boss on the mat projecting into the socket and a flange on the boss engageable with the flange around the periphery of the socket to hold the mat and head in loose Coupled relation with each other.

2. A jack having a head and a inat, the head having a socket provided with an oven hanging flange around its periphery, a boss on the mat projecting into the socket and a flange on the boss engageable with the flange around the periphery of the sotliet to hold the mat and head in loose oupled relation With each other and anti-fiiclion means interposed between the head and mat.

3. A jack having a head and a mat, the head having a socket provided with an oven hanging flange around its periphery, a boss on the mat projecting into the socket and a flange on the boss engageable with the flange around the peripheryY of the socket to hold the mat and head in loose coupled relation with each other, and antidriction means interposed between the head and met and contained within the socket.

4. A jack having a head and a mat, the head having a socket provided with an oven hanging flange around its periphery, a boss Von the mat projecting into the socket and a flange on the boss engageable with the flange around theperiphery of the socket to hold the mat and head in loose coupled relation with each other and a single ball interposed between the mat and head to provide antifriction means without interfering with the relative flexible movement between the tivo.

In testimoni,Y whereof We allix our signatures.

EMMITT M. TUCKER. JESSE D. TUCKER. 

